High School Wrestler who grew up on the mats. Almost 30 years of combat sports experience including Wrestling, Karate, Muay Thai, and MMA. I tried my first no-gi BJJ class in 2006 and now I’m addicted. Former Canadian Armed Forces Armour Officer. Now a sports performance coach and husband. Why too legit to quit? It implies that the person is so good, so real, or so successful that it's impossible to stop or give up. This person has a strong sense of conviction and dedication. They know that quitting is not an option because the endeavour is too important.